I don't recall seeing this question brought up lately, so my brother (Phenglei Kai) and I thought it might make for a nice, light little off-topic blog.
Why did you choose your particular avatar?
In my case, it's pretty simple :
I like butterflies. :)
When I was little, I was one of those kids who would spend afternoons and evenings in a local park, trying to catch butterflies in jars.
Right now, I am looking at a lovely stained glass picture (a pattern of butterflies and flowers) hanging from my window. It was a birthday gift from ... somebody special. <3
I also have a lot of images of butterflies stored on this computer's hard drive, that I've collected from the Internet. And it was just a natural fit for me to choose one of them to use for my avatar, both on fanfiction.net and here.
So, that's my story. What's yours?